EP1578651A1 - Vorrichtung zur auswertung von ersten sensorsignalen in einem fahrzeug - Google Patents
Vorrichtung zur auswertung von ersten sensorsignalen in einem fahrzeugInfo
- Publication number
- EP1578651A1 EP1578651A1 EP03761366A EP03761366A EP1578651A1 EP 1578651 A1 EP1578651 A1 EP 1578651A1 EP 03761366 A EP03761366 A EP 03761366A EP 03761366 A EP03761366 A EP 03761366A EP 1578651 A1 EP1578651 A1 EP 1578651A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sensors
- vehicle
- sensor signals
- control unit
- evaluating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000009434 installation Methods 0.000 claims description 12
- 230000000007 visual effect Effects 0.000 claims description 2
- 230000001133 acceleration Effects 0.000 description 22
- 238000011156 evaluation Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000010354 integration Effects 0.000 description 3
- 238000001914 filtration Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
- B60R21/013—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over
- B60R21/0132—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over responsive to vehicle motion parameters, e.g. to vehicle longitudinal or transversal deceleration or speed value
- B60R21/0133—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over responsive to vehicle motion parameters, e.g. to vehicle longitudinal or transversal deceleration or speed value by integrating the amplitude of the input signal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
- B60R21/013—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over
- B60R21/0132—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over responsive to vehicle motion parameters, e.g. to vehicle longitudinal or transversal deceleration or speed value
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/88—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means
- B60T8/885—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means using electrical circuitry
Definitions
- the invention is based on a standard device for evaluating first sensor signals in a vehicle according to the category of the independent patent claim.
- the inventive device for evaluating first sensor signals in a vehicle with the features of the independent claim has the northern part that the device is configured such that it checks the installation position of the first sensors by evaluating second sensor signals from second sensors.
- outsourced sensors in particular are checked as the first sensors in a vehicle in their installed position by centrally arranged second sensors.
- the first sensors can preferably be acceleration sensors.
- other sensors are also conceivable which, similar to acceleration sensors during driving maneuvers such as braking and cornering, and also generate corresponding signals on rough roads.
- the comparison and subsequent suitable evaluation of the signals of the first and second sensors is intended to check the installation position of the sensors with respect to one another and the correspondence of the sensing direction and the setting in the algorithm, preferably an algorithm for controlling restraint systems.
- the measures and developments listed in the dependent claims enable advantageous improvements of the device for evaluating first sensor signals in a vehicle, as specified in the independent patent claim.
- the second sensors are arranged centrally in the vehicle, and in particular in a control unit, for example an airbag control unit or a control unit for a driving dynamics system, such as ESP (Electronic Stability Program).
- a control unit for example an airbag control unit or a control unit for a driving dynamics system, such as ESP (Electronic Stability Program).
- the first sensors can be arranged in the vehicle side as side impact sensors and / or on the vehicle front, that is to say for front impact sensors as so-called up-front sensors.
- the sensors can be arranged in the rear of the vehicle or at other locations in the vehicle.
- the device advantageously also emits a signal depending on the evaluation of the first and second sensor signals. In the event of a mismatch, this signal can be used to output an acoustic and / or visual and / or haptic warning to a driver.
- the comparison of the two sensor signals can preferably be carried out by the integrated acceleration signals, this comparison being carried out for a predetermined time.
- filtering can also be carried out, or the acceleration signals themselves can be used, or double integration can also be carried out, that is to say that a comparison of the respective forward displacement takes place.
- FIG. 1 shows a block diagram of the device according to the invention and FIG. 2 shows a flow diagram to illustrate the signal comparison.
- outsourced acceleration sensors are used in the vehicle, and their direction of sensing must be taken into account in the algorithm.
- the installation position of the sensors is determined by mechanical coding, which enables installation in one direction only.
- the sensing direction is set in the algorithm via parameters.
- the sensors are installed incorrectly despite the mechanical coding or that the parameter setting of the algorithm does not match the installation position of the sensors. So far, this cannot be checked during operation.
- the outsourced sensors can be compared with the sensors in the central device over a sufficiently long period of time. If the signals do not match, the sensing direction is recognized as faulty, that is to say the installation position, and the warning lamp is activated, for example. Corresponding signals occur in particular during driving maneuvers such as braking and cornering and possibly on rough roads, which enable an evaluation. Signals from other systems can also be used, for example ESP signals. In this way, deviations of the sensing direction presupposed in the algorithm from the installation position of the sensors can be recognized.
- a block diagram in FIG. 1 shows how the device according to the invention is constructed.
- a central airbag control device 1 has a processor 2, which receives signals from sensors centrally arranged in the control device 1, that is to say acceleration sensors, 3 at a first data input. These sensors can be arranged in the x-y direction, that is to say in the direction of travel and transversely thereto, or also at an angle to the longitudinal and transverse directions of the vehicle. These acceleration sensors are preferably micromechanically manufactured acceleration sensors.
- the processor is also outsourced via a second data input
- Acceleration sensors 4 connected, which are preferably arranged in the vehicle side or in the vehicle front.
- the processor 2 is connected via a third data input connected to further acceleration sensors 5, which are also outsourced.
- interface modules have been omitted here.
- Other conventional and necessary components in the airbag control unit 1 have also been omitted here for the sake of simplicity.
- the outsourced sensors 4 and 5 can also be connected to the control unit 1 via a bus, that is to say for example via a sensor bus.
- the processor 2 is connected to an ESP control unit 6 via a fourth data input.
- the ESP control unit itself also has acceleration sensors so that the signals from these acceleration sensors can be transmitted to the airbag control unit 1 and then to the processor 2 by the ESP control unit 6.
- the processor 2 is connected to a control 6 via a data output.
- This control 6 controls a loudspeaker 7 via a first output and a warning lamp 8 via a second output.
- the control 6 is activated and this will control the loudspeaker 7 and the warning lamp 8.
- the sensors 4 and 5 each have a plurality of acceleration sensors which are also arranged in different spatial directions. In the case of side impact sensors, these spatial directions are in addition to the y direction, that is to say the vehicle transverse direction, for. B. also the vehicle longitudinal direction and the vertical axis, that is, the z-axis of the vehicle.
- Up-front sensors which can also be connected to processor 2 in addition to or instead of sensors 4 and 5, can also be x and y sensors or x and z sensors or all three sensors act.
- the sensors 4 and 5 themselves can also be designed as independent airbag control units. These control units would then send trigger commands to the return means assigned to them in a crash situation. But even then the connection with the centrally arranged airbag control unit 1 makes sense, since in this case the sensor direction of the sensors in the control units 4 and 5 can also be compared with the installation position in the central control unit of the sensors 3. In addition, it is possible that the installation position of the ESP acceleration sensor in the ESP control unit 6 can also be checked.
- FIG. 2 shows in a flow chart how the comparison according to the invention can be carried out.
- an acceleration signal of one of the outsourced sensors 4 or 5 is generated. This signal is evaluated in block 202, the evaluation in the acceleration sensors 4 and 5 being able to be carried out by appropriate electronics or processor technology or in the central control unit 1.
- a sensor system 3 generates a centrally generated signal Acceleration signal generated, which is also evaluated in block 203. Both signals, the mathematically processed acceleration signal of the outsourced acceleration sensor and that of the centrally arranged acceleration sensor, are compared in block 204 for a time ⁇ t. Depending on this comparison, a signal 205 is generated which can be used to control the control 6.
- Predetermined deviations are exceeded in the period ⁇ t, these deviations can be accumulated in the predefined period ⁇ t or a certain limit value can be exceeded in this period ⁇ t in the case of the deviation. If the deviation is too large, a warning is issued via the lamp 8 or the loudspeaker 7. The warning can also be output on a display of an on-board computer.
- an error entry can be filed in the control unit and the function of the control unit can be influenced in a suitable manner. The error entry can be stored in volatile or permanent memory.
- the control unit can be influenced by switching to a backup solution or by deactivating individual functions of the control unit.
- the evaluation of the signal can be understood to mean integration or filtering with a threshold value comparison or another suitable mathematical operation.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Air Bags (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10260848A DE10260848A1 (de) | 2002-12-23 | 2002-12-23 | Vorrichtung zur Auswertung von ersten Sensorsignalen in einem Fahrzeug |
| DE10260848 | 2002-12-23 | ||
| PCT/DE2003/001736 WO2004060733A1 (de) | 2002-12-23 | 2003-05-28 | Vorrichtung zur auswertung von ersten sensorsignalen in einem fahrzeug |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1578651A1 true EP1578651A1 (de) | 2005-09-28 |
| EP1578651B1 EP1578651B1 (de) | 2010-09-15 |
Family
ID=32477959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP03761366A Expired - Lifetime EP1578651B1 (de) | 2002-12-23 | 2003-05-28 | Vorrichtung zur auswertung von ersten sensorsignalen in einem fahrzeug |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1578651B1 (de) |
| DE (2) | DE10260848A1 (de) |
| WO (1) | WO2004060733A1 (de) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004043580B4 (de) * | 2004-09-09 | 2014-03-13 | Volkswagen Ag | Sensorkonfigurationsverfahren |
| DE102004044335A1 (de) * | 2004-09-09 | 2006-04-06 | Robert Bosch Gmbh | Verfahren zum Überwachen von redundanten Sensorsignalen |
| DE102005015961A1 (de) * | 2005-04-07 | 2006-10-12 | Conti Temic Microelectronic Gmbh | Vorrichtung und Verfahren zur Überrollerkennung bei einem Fahrzeug |
| DE102009020594A1 (de) * | 2008-11-08 | 2010-05-20 | Wabco Gmbh | Verfahren zum Ermitteln einer Fahrtrichtung und Steuereinrichtung für ein Fahrzeugsystem |
| DE102011121822A1 (de) * | 2011-12-21 | 2013-06-27 | Wabco Gmbh | Verfahren und Einrichtung zum Bestimmen der Einbaulage eines Sensormoduls in einem Fahrzeug sowie Fahrzeug mit einer derartigen Einrichtung |
| DE102015115282A1 (de) * | 2015-09-10 | 2017-03-16 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Verfahren und Vorrichtung zum Feststellen einer Orientierung einer Sensoreinheit |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19936596C1 (de) * | 1999-08-04 | 2001-01-18 | Daimler Chrysler Ag | Verfahren zur Funktionsprüfung einer Fahrdynamikregelungssensorik |
| DE10002685A1 (de) * | 2000-01-22 | 2001-07-26 | Wabco Gmbh & Co Ohg | Verfahren zur Erkennung des fehlerhaften Einbaus von Sensiermiteln in einem Fahrzeug |
-
2002
- 2002-12-23 DE DE10260848A patent/DE10260848A1/de not_active Withdrawn
-
2003
- 2003-05-28 EP EP03761366A patent/EP1578651B1/de not_active Expired - Lifetime
- 2003-05-28 DE DE50313105T patent/DE50313105D1/de not_active Expired - Lifetime
- 2003-05-28 WO PCT/DE2003/001736 patent/WO2004060733A1/de not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2004060733A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE50313105D1 (de) | 2010-10-28 |
| EP1578651B1 (de) | 2010-09-15 |
| DE10260848A1 (de) | 2004-07-08 |
| WO2004060733A1 (de) | 2004-07-22 |
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